People who are on the extreme far left side of the political spectrum, i.e., Green Peace, PETA, or similar minded people who want to save the Earth but who are so hardcore they frighten most people away. These are the folks you see tying themselves to trees to save the owls or throw red paint on ladies who wear fur coats. They're usually vegans who eat nothing but a rice noodle and diet water yet have the money to afford filet mignon. They are the ideological opposite of the ultra-right conservative yet are equally vociferous and staunch in their beliefs while being just as obnoxious and full of shit.